Emacs can't find company-box.

[TravisCao]

What did you expect to happen?
...
After add (+childframe) to : completion company, (I didn't add extra config of company-box) it should work fine.

What actually happened?
...
Emacs shows (file missing cannot open load file No such file or directory company-box)
.

Additional details:

• Include a link to your private config
• Include screenshots/casts of your issue
• If you mention key sequences, include what commands they're bound to (use SPC h k KEY or C-h h k KEY to inspect keys).
• Include any warnings or errors logged to *Messages* (use M-x view-echo-area-messages to see it).

If an error message is involved include a backtrace of it.
How to acquire a backtrace:

https://github.com/hlissner/doom-emacs/blob/develop/docs/getting_started.org#how-to-extract-a-backtrace-from-an-error

Steps to reproduce:

1. Select these example steps,
2. Delete them,
3. And replace them with precise steps to reproduce your issue.
4. Fill in "system information" below.

• System information
  • System: macOS Catalina 10.15.2
  • Emacs: 26.3 installed by Homebrew
    

System information:

Place the output of `M-x doom/info` or `~/.emacs.d/bin/doom info` here.

[hlissner]

1. Did you remember to run doom sync?
2. If you did, does Could not find package X in recipe repositories #2802 (comment) fix your issue?
3. If not, does Fresh install fails with "destination path ... already exists and is not empty" #2937 (comment) ?

[TravisCao]

OK. #2802 fix. Thx!